Grid-bar for cotton-pickers.



No. 768,409. PATENTED AUG. 23, 1904 A. A. SWEET. GRID BAR FOR COTTON PIOKERS.

' APPLIUATION FILED MAY 5, 1904.

N0 MODEL.

1 UNITED STATES Patented August 23, 1904. '7

PATENT OFFICE.

GRID-BAR FOR COTTON-PICKERS.

SPECIFIGATION- forming part of Letters Patent No. 768,409, dated. August 23, 1 904.

Application filed May 5, 1904;. Serial No 206,597. (No model.)

To wZZ whom 'it may concern:

Be it known that I, ALBERT A. SWEET, a citizen of the United States, residing at Fall River,

in the county of Bristol and 'State o-f'Massachusetts, have invented new and useful Improvements in Grid-Bars for Cotton-Pickers, of which the following is a specification.

This invention relates to cotton pickers or openers; and its object is to providea grid for such a machine composed of bars of improved configuration for the purpose of removing a greater quantity of dirt and refuse from the cotton than is possible with bars of the customary construction:

As is well known, the first process in the manufacture of cotton cloth consists in picking up the cotton and cleaning out the dirt and then winding it in laps on a large roll, from which it goes to the carding-machine. The

picker or opener comprises a cylinder made up in part of parallel bar-s set slightly apart and so shaped as to afiord a retarding eifect as the cotton is swept past them by beaterarms revolving rapidly inside the cylinder.1

The result is to pull the cotton open and loosen up the fibers, so that the dirt can be beaten out and expelled through the spaces between the grid-bars. Myinvention aims to expedite this cleaning effect by providing the bar with-ribs which extend along the inner faces of the bars in a lengthwise direction, sometimes parallel with the edges of the bars and sometimes diagonal thereto, but always in a direction transverse tothe line of movement of the cotton,

those shown are triangular-in cross-section. The first bar, 1, has on its inner flat face a plurality of diagonal ribs 2, parallel with each other, with their ends overlapping. The second bar, 3, has a similar set of ribs 4:, running downward in the opposite direction to those on the bar 1. The third bar, 5, has a plain inner face.1 The fourth bar, 6, has a straight rib 7 running lengthwise thereof, parallel with its top and bottom edges. The fifth bar, 8, has a, plurality of diagonal ribs 9 like those on the bar 1. The sixth bar, 10, has a set of diagonal ribs 11 like those on the bar 3. The seventh bar, 12, is plain like the third. The eighth bar, 13, has a straight longitudinal rib lt like the fourth bar. The ninth bar, 15, and the tenth, 16, are rectangular in cross-section and each has a straight longitudinal rib 17 along its middle. The bars are slightly separated by suitable Ineanssuch, for instance, as the screws 18 with projecting heads, each next upper bar resting on the heads of the screws in I mult'aneous rub the entire length of the cylinder. This action is repeated three times by the bars 13, 15, and 16. The cotton is thus thoronghly shaken up and moved about, so

that all dirt is readilyexpelled through the narrow spaces between the bars. The width of these spaces can be adjusted by means of the screws 19 or other spacing devices.

The bars may be made separate, as shown in Fig. 3, or two or more may be combined in one integral structure, as shown in Fig. 4.,

proper spaces 20 being left between the mem-v be'rs which serve as'bars.

Having thus described my invention, what I claim is' 1. A grid for a cotton-picker, composed bars provided with diagonal ribs. 2. A grid for a cotton-picker, composed of bars provided with parallel diagonal ribs.

3. In a grid for a cotton-picker, the combination with a bar having ribs running. in one direction, of a bar having ribs running in the opposite direction.

1. In a grid for a cotton-picker,'the, combination with a bar having ribs running diagonally downward across the face of the bar in one direction, of abar having similar ribs running downward in the opposite direction.

5. In a grid for a cotton-picker, the combination with a bar having ribs running diagonally downward, of a bar having a rib running lengthwise thereof.

6. In a grid for a cotton-picker, the combination with a bar having ribs running diagonally downward, of a bar having a plain face.

7. In a grid for a cotton-picker, the combination with a bar havinga rib running lengthwise thereof, of a bar having a plain face.

8. In a grid for a cotton-picker, the combination with bars having ribs running diagonally, of a bar having a rib running lengthwise, and a bar having a plain face.

9. In a grid for a cotton-picker, the combination with bars triangular in cross-section and provided with ribs on their inner faces, of bars rectangular in cross-section and provided with longitudinal ribs on their inner faces.

10. In a grid for a cotton-pickei',tl1e combination with a bar 1 having the diagonal ribs 2, the bar 3 having the diagonal ribs I, the bar 5 having a plain face, and the bar (3 having the longitudinal rib 7, of the bars 8, '10, 12 and 13, respectively provided with ribs similar to the bars 1, 3, 5 and 6.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

.ALBERT A. S\VEIGT.

WVitnesses:

ARBA N. LINCOLN, JOSEPHINE L. Brown. 

